feat(utils): 新增 ii 立即调用函数并返回其返回值

src/utils/ii.test.ts

@@ -0,0 +1,8 @@
+import { ii } from './ii'
+
+describe('ii', () => {
+  test('表现正常', async () => {
+    expect(ii(() => 1)).toBe(1)
+    expect(await ii(() => Promise.resolve(1))).toBe(1)
+  })
+})

src/utils/ii.ts

@@ -0,0 +1,17 @@
+import { AnyFunction } from '../types'
+
+/**
+ * 立即调用函数并返回其返回值。
+ *
+ * 注：`ii = immediately invoke`
+ *
+ * @param fn 要调用的函数
+ * @returns 返回被调用函数的返回值
+ * @example
+ * ```typescript
+ * ii(() => 1) // => 1
+ * ```
+ */
+export function ii<F extends AnyFunction>(fn: F): ReturnType<F> {
+  return fn()
+}

src/utils/index.ts

@@ -23,6 +23,7 @@ export * from './formatBytes'
 export * from './formatNumber'
 export * from './getEnvironment'
 export * from './getWechatPublicAccountQrcodeUrl'
+export * from './ii'
 export * from './inAndroid'
 export * from './inBrowser'
 export * from './inDeno'